Reading, definitely for a few reasons...
The largest one by far, is that listening to the talking heads they know how to choose synonyms carefully to make the story sound more shocking, unbelievable, atrocious, appalling, heinous, or IMPLY any other extreme emotion. Repeatedly I could listen to a broadcast, then reread the events in print, and come up with two completely different chain of events or line of facts that completely changes the story. If it's on TV, their goal is to sensationalize and sell it for ratings.
When it comes to print accuracy becomes more important, because they can't take their words back and their name is attached to it (although this isn't always true either, with news sites picking up content and not verifying it first before republishing... but that's another issue enitrely and usually doesn't have someone's name attached to it).
I also prefer print because I can reread sections, important data can be found in a table or graph, and you can glean the important highlights within seconds, as opposed to watching where they withhold important details until the end or near end of the report.
